Create a security group in 365, add members (you can add a distribution list as the member) – I called my group blockteamscreation
Run powershell as admin, then run this: Install-Module AzureADPreview
Then run:
$GroupName = "<blockteamscreation>"
$AllowGroupCreation = "False"
Connect-AzureAD
$settingsObjectID = (Get-AzureADDirectorySetting | Where-object -Property Displayname -Value "Group.Unified" -EQ).id
if(!$settingsObjectID)
{
$template = Get-AzureADDirectorySettingTemplate | Where-object {$_.displayname -eq "group.unified"}
$settingsCopy = $template.CreateDirectorySetting()
New-AzureADDirectorySetting -DirectorySetting $settingsCopy
$settingsObjectID = (Get-AzureADDirectorySetting | Where-object -Property Displayname -Value "Group.Unified" -EQ).id
}
$settingsCopy = Get-AzureADDirectorySetting -Id $settingsObjectID
$settingsCopy["EnableGroupCreation"] = $AllowGroupCreation
if($GroupName)
{
$settingsCopy["GroupCreationAllowedGroupId"] = (Get-AzureADGroup -SearchString $GroupName).objectid
}
else {
$settingsCopy["GroupCreationAllowedGroupId"] = $GroupName
}
Set-AzureADDirectorySetting -Id $settingsObjectID -DirectorySetting $settingsCopy
(Get-AzureADDirectorySetting -Id $settingsObjectID).Values